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优惠券批量生成及导入的思路 - 闲聊区 - 清泛IT论坛，有思想、有深度
...n gen_coupon() {
    do {
        $m = mt_rand(0, PHP_INT_MAX);
        $n = mt_rand(0, PHP_INT_MAX);
        $m = base_convert($m, 10, 36);  // 主随机
       &n...
How to fix org.hibernate.LazyInitializationException - could not initialize proxy - no Session
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What is wrong here is that your session management configuration is set to close session when you commit transaction. Check if you have something like:
<property name="current_session_context_class">thread</property>
in your configuration.
In order ...
How m>ca m>n I have ruby logger log output to stdout as well as file?
Someting like a tee functionality in logger.
20 Answers
20
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Interface vs Abstract Class (general OO)
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While your question indim>ca m>tes it's for "general OO", it really seems to be focusing on .NET use of these terms.
In .NET (similar for Java):
interfaces m>ca m>n have no state or implementation
a class that implements an interface must provide an implem...
How to check if element in groovy array/hash/collection/list?
How do I figure out if an array contains an element?
I thought there might be something like [1, 2, 3].includes(1) which would evaluate as true .
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Python - How to sort a list of lists by the fourth element in each list? [duplim>ca m>te]
I would like to sort the following list of lists by the fourth element (the integer) in each individual list.
2 Answers
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Quick easy way to migrate SQLite3 to MySQL? [closed]
Anyone know a quick easy way to migrate a SQLite3 database to MySQL?
17 Answers
17
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Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
I want to slice a NumPy nxn array. I want to extract an arbitrary selection of m rows and columns of that array (i.e. without any pattern in the numbers of rows/columns), making it a new, mxm array. For this example let us say the array is 4x4 and I want to extract a 2x2 array from it.
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How to sleep for five seconds in a batch file/cmd [duplim>ca m>te]
Windows's Snipping tool m>ca m>n m>ca m>pture the screen, but sometimes I want to m>ca m>pture the screen after five seconds, such as taking an image being displayed by the webm>ca m>m. (Run the script and smile at the m>ca m>mera, for example.)
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Stashing only un-staged changes in Git
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answered Oct 4 '11 at 16:10
vhallacvhallac
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